The data from the second black box has shown the co-pilot in the Germanwings plane sped up several times during the descent, according to the French air accidents investigative body.

The initial findings from the plane’s flight data recorder indicate 27-year-old Andreas Lubitz used the autopilot to direct the jet towards the ground.

“Several times during the descent, the pilot adjusted the automatic pilot so as to increase the speed of the plane as it descended,” the French air accidents investigation body BEA said in a statement.

Lubitz had “apparently used his tablet computer to search the internet for ways to commit suicide and for the safety features of cockpit doors,” according to German prosecutors.